1) How much energy is needed in lifting 5 m3 of water to a height of 20 m and projecting it horizontally at a speed of 10 m/s?What must be the power of an engine capable of performing this amount of work in 12.3s?(Take g = 9.81 m/s2 and density of water = 1000 kg/m3) 2...
A washing machine consumes 1200 watts of electricity for 2 hours. How much energy does it consume in total? A. 2400 watts B. 600 watts C. 1000 watts D. 2000 watts 相关知识点: 试题来源: 解析 A。总能耗等于功率乘以时间,1200×2=2400 瓦。
How much energy is required to change a 47 gice cube from ice at −10\x0eC to steam at 117\x0eC?The specific heat of ice is 2090 J/kg ·\x0e C,thespecific heat of water is 4186 J/kg ·\x0e C,thespecific heat of stream is 2010 J/kg ·...
How much energy is consumed by traditional houses in moderate climate zones in industrialized countries? A. 100-200 kWh/m2 B. 200-300 kWh/m2 C. 300-400 kWh/m2 D. 400-500 kWh/m2 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏 举报 参考答案: ...
百度试题 结果1 题目Unit for messuring how much energy the food can give us.其中energy 是“能量”的意思. 相关知识点: 试题来源: 解析 股messuring多少能量的食物能给我们.反馈 收藏
有这样一句话:“How much solar energy will the solar panels transform into electrical energy if the efficiency is 90%?” 想问这句话到底是要求什么,是太阳能还是电能‥我个人觉得是太阳能吧…假如是电能的话, 相关知识点: 试题来源: 解析 求的是solar energy ...
How much heat energy is in a large calorie (Calorie) 免费查看参考答案及解析 制定绩效目标的SMART原则包括 A 绩效目标应该明确具体 B 绩效目标应该可衡量 C 绩效目标应该具有行为导向 D 绩效目标应该切实可行 E 绩效目标应该受时间和资源限制 免费查看参考答案及解析 设计高质量的绩效评价系统应该处理好的基本...
5. How much energy is required to melt 47.2kg of ice? Quote your answer to 2 decimal places and in Joules - but don't include the actual units in your submitted answer! 把47.2千克的冰融化需要多少能量? 单位用克 保留小数点后2位有效数字 但是回答总体问题的时候不需要单位. ...
How much energy(44.87g of water from71.5\deg C to115.1\deg C?(Hint: Remember that you need to take into consideration the boiling process)Relevant thermodynamic quantities: Cs(H2O g)=1.87J/g˚C Cs(H2O l)=4.184JgCHvapH...
1) How much energy is needed in lifting 5 m3 of water to a height of 20 m and projecting it horizontally at a speed of 10 m/s?What must be the power of an engine capable of performing this amount of work in 12.3s?(Take g = 9.81 m/s2 and density of water = 1000 kg/m3)2)...